Ekiga (formely known as GnomeMeeting) is a soft phone, video conferencing, and instant messenger application for use over the Internet. It supports HD sound quality and video up to DVD size and quality. It is interoperable with many other standards compliant software, hardware, and service providers as it uses both of the major telephony standards, SIP and H.323.

Moodle is a learning management system for
producing Internet-based course Web sites. It is
written in PHP and is easy to install and use on
Linux, Windows, Mac OS X, SunOS, BSD, and Netware
6. It has been designed to support modern
pedagogies based on social constructionist theory,
and includes activity modules such as forums,
chats, resources, journals, quizzes, surveys,
choices, workshops, glossaries, lessons, and
assignments. It has been translated into over 70
languages, with more on the way, and supports the
popular SCORM standard for content packaging.
Moodle offers a free alternative to commercial
software such as WebCT or Blackboard, and is being
used by a growing number of universities, schools,
and independent teachers for distance education or
to supplement face-to-face teaching.

Klavaro is a touch typing tutor that is very
flexible and supports customizable keyboard
layouts. Users can edit and save new or unknown
keyboard layouts, as the basic course provided by
the program was designed to not depend on specific
layouts.

The Mnemosyne software resembles a traditional flash card program to help you memorize question/answer pairs, but with an important
twist: it uses a sophisticated algorithm to schedule the best time for a card to come up for review. Difficult cards that you tend to forget
quickly will be scheduled more often, while Mnemosyne won't waste your time on things you remember well.

Jmol is a Free, Open Source molecule viewer and editor. It is a collaboratively developed visualization and measurement tool for chemical scientists. Jmol is an active project, and there are new features being added to it on a daily basis. Users are encouraged to modify it to fit their needs and to contribute their changes to the project.

drawboard is a Java applet used to make graphical
teleconferences (like the whiteboard in
Netmeeting). When you draw something on your
table, all remote users can see it. It features a
client-server architecture and a high-color
palette.

adept is a system for developing short courses for users needing to learn specific skills or knowledge. adept provides JIT ("just in time") learning, in contrast to the more usual "just in case" learning. It can be used as an intranet application to propagate knowledge to employees, or to educate customers via your homepage.

OpenOLAT is a learning management system used by universities, schools, and companies to deliver e-learning content, to do testing and assessment, and to work collaboratively in various learning scenarios.

LON-CAPA (The LearningOnline Network with CAPA) is
a learning content and course management system. It offers an underlying shared content pool from which instructors across departmental and institutional boundaries can assemble granular learning content for their courses. It has strong assessment capabilities, both formative (homework and in-class using wireless PDAs) and summative (online and bubblesheet exams), with a one-source multiple-target strategy for the content. It offers students portfolio space in which they can stage materials for submission to projects, and provides a number of tools for synchronous and asynchronous student-student and student-faculty communication. LON-CAPA scales well with number of students, as load-balancing is possible across the whole network of servers at participating institutions.